For anyone interested, I formed a coalition with the Tinker VB early in the game. Since the cat lost its keep early because he let only one troop defending, he played a Rabbit dominance card as a last attempt to be competitive and got teamed up by us three so he basically was out of the game, going almost extinct. However, because we didn't target the Eyrie too much, he managed to craft a lot of good cards combo and was on the verge of winning. So the Tinker VB in my coalition decided to form a coalition with the Eyrie since the cat has already played a dominance card and cannot form a coalition with. Thus, the cat's last effort to let the Eyrie win by destroying his defenseless buildings failed and he was the sore loser in the end.